Angry Bird Legs

A term describing the feeling of total numbness - or pins and needles in your legs whilst using your phone or other device (ipod etc) on the toilet. This happens when you rest your arms on your legs for added stability when playing a game or surfing the internet or facebook.

"what took you so long? you've been gone 20 minutes!".
"Oh yeah...i went to the loo and got angry bird legs".